How the Duolingo Founders Offered Free Education To Millions


As stars fill the night sky in Veracruz, Mexico, 23-year-old Uziel Alejandro López kicks back at home to play on his Android smartphone. His thumbs breeze over the brightly colored screen, but this...

Google Uses Street View Images in reCaptcha


I never thought of Google's reCaptcha process as anything more than a way to catch spamming robots and prevent them from getting on forums and other Internet resources. Apparently, Google also uses...